You might get better results if you elaborate. Your query is a bit vague, among other things. What experience do you have? What type of work do you do? What would you be bringing to the table in the proposed relationship? What are you looking for? Are you looking to start your own team? Join a pre-existing team? Are you looking to build general purpose themes? App themes? Mobile themes? Are you looking for help for a specific project or projects, or is this a long-term arrangement? The more info you can provide, the better the responses you’re likely to get.